Roller-bearing.



Patented Jan. 16, 1912.

2 SHRIMP-SHEET 1 j INVENTOR 1 7114M; a

I By A/fm'myv, I

ROLLER BEARING. 121*111011110! FILED 1153.9, 1900.

WITNESSES:

W. J. GARTWRIGHT. ROLLER BEARING.

APPLICATION FILED IEB.9, 1909.

1,015,273. Patented Jan. 16, 19 12.

2 SHEETSE-SHEBT 2.

7/ INVENTOR WITNESSES: fi "QM,

MW B11 J/zm'm'jx,

ILLIAM .ncaRrwnmHr, on NEW YORK, n. "Y."

ROLLERPBEARING.

Specification of Letters Patent.

Application filed Eebruary 9, 1909. Serial No. 476,941.

To all whom it may concern;

- Be'it known that I, WILLIAM CART- wnrorrr, a citizen of the United States, re-. siding in the borough of Manhattan, city,

county, and State of New York, have invented certain new and useful Improvements in Roller-Bearings, of which the following is a specification.

This invention relates to roller bearings applicable to shafts, axles or hubs; and its object is to provide such a bearingwhich shall be capable of adjustment for taking up looseness or lost motion such as may resuit from wear. 1

The accompanying drawings show several embodiments of the invention, applicable under diflerent'conditions. I.

Figures 1 to 5 inclusive showone embodiment, of which Fig. 6 illustrates a slight modification. Fig. 1 is a diametrical section; Fig'. 2 is an end elevation of the bearing with one ofthe guide rings partly'='broken away and with a part of thebearing in midsection on the line 2-2 in Fig. 31'; Fig. 3 shows the inner face of one of the guide rings with its fastening posts in section Fig. 4 is an elevation of a pair of rollers; Fig. 5 is a transverse section on the line 55 in Fig. 3; Fig.6 is a fragmentary diametrlcal section in the same lane as. Fig. 1; Figs. 7, 8 and 9 show anoter'embodimentof the invention,- of which Fig. 10 illustrates a slight modification; Fig. 7 is a diametrical section, corresponding to Fig. 1. Fig. 8 is an end elevationof the bearing, the guide ring beingpartly broken away; Fig. 9 1s a. transverse midsection on the line 9-9 in Fig. 7; Fig. 10 is a diametricalsection answering to Fig. 7. I

In theseveral drawings, A designates the shaft or axle, B a sleeve or ring encircling the shaft or axle, 0 another sleeve or ring encircling the ring B, D D the traction rollers between the rings B and C, and E E guide rings engaging the rollers.

In Fig). 1 F designates a portion'of the bearing 1 volvin .shaft; or'ltmaydeslgnate, a portion o the hub of a Wheel turningupon a fixedaxle.

The shaft A audits ring B may revolve I within a fixed bearing F and fixed ring" C;

or- A may be a nonrotativeaxle andF may be a revolving hub, in which case the ring C revolves around the nonrotating ring B. In either case the rings B and C. are traction ock or pillow in the case of a rerings, against and between which roll the rollers D'D. These rollers are tapered or slightly coned, and the traction surfaces of the rings B and C are tapered'or coned to the same angle, sothat the respective tractlon surfacesof the rings and rollers make an accurate ,fit and transmit the thrust or pressure uniformly from the one traction .ring through the rollers .to the other traction rin The rollers are movable or adjustable wit reference to the traction rings 1n such manner as to take up looseness or wear.

The rollers are kept in alinement and at their proper relative spacing by means of the guide rings E E, which suitably engage are connected by pins them. These rings or posts G G which preserve them 111 correct relation to one another, thus forming what is known as a ca e.

The generalnature o the invention being thus understood, I'Will' proceed to describe the several embodiments thereof separately.

Referring first to Figs. 1 to 6, the sleeves.

or traction rings .13 and C are each oppositely coned, and receive between them pairs of rollers D D, each roller consisting of a frustum of a cone. The two rollers are spaced somewhat apart to afford room for adjustment. The two rollers of one pair are shown separately in Fig. 4. They are'held Patented Jan. 16,1912.

in alinement by means of an axial, pin a, f

which makes a loose working fit. with axial holes bored into the res ective rollers. The larger or outer ends 0 the rollers are en gaged by the guide rings E E, being either made conical on their ends as shown in Figs. 1 and 4, and entering conical recesses b b in the rings; or being made rounded as shown in Fig. 6 and entering rounded recesses in the rings. Fig. 6 also shows a, modification of the centering pin a, it being formed integrall with one roller and entering a bore int e other. The guide rings E E are connected at intervals to form'the cage, by a suitable number of pins or posts G G, four being shown. The relative adjustment of the rollers and traction rings is in this construction effected by moving the rollers in axial direction, so that the two rollers of each pair mutually approach or recede. By

reason of their taper the pressure transmitted through them tends to causethem to re Code from each other, and consequently presses them outwardly against the guide rings; hence these rings are made adjustable toward or from one another, in order through them to adj ust the rollers. For this purpose the connecting pins G G are in this construction utilized as the adjusting means, being made as screws the heads of which enga e one ring, while their threaded ends (see *ig. 5;), ,,.engage the other ring and are fastened by 5 1001; or jam-nut c. This nut is for compactness sun}; into a socket in the ring, and is formed with a nick for engager ment by a screw-driver or wrench. Thus by releasing the nuts any lost motion or wear can be taken up by turning the screws G G to thereby draw the rings E E closer together and force the rollers D D of the respective pairs to approach one another.

The construction shown in Figs. 1 to 6 is adapted toa bearing carrying a heavy load or side thrust, since it utilizes the full length of each of the rollers for the transmiss on of the weight or stress. The construction shown in Figs. 7 to 10 is designed for bear-,-

ings which are subject to a light load or stress. This construction is simpler, in that a single roller is used in place of each of the pairs of rollers in the first described construction.-

In Figs. 7 to 9 the traction rings are or may be exactly like those of Figs. 1 to 6. Inplace however of each pair of rollers shown in Fig. 4, a single conical roller is used, of the shape shown in Fig. 7 or 10. These rollers thus make tractive contact with the traction rings for only. one-half of the width of the latter, that is, from the middle thereof to one. end only.. Hence it is necessary, in order to distribute; the traction and avoid an end thrust in one idirection, to divide the rollers into two series, with their apexes pointing in contrary directions. It

ispreferable to alternate the rollers, so that the odd-numbered ones point in one direction and the even-nu1nbered ones in the opposite direction. To illustrate this the sections in Figs. 7 and 10 are cut at the top through a roller of one series and at the bottom through a roller of the other series. The pressure or stress transversely of the main axis of rotation thus tends to cause each of the rollers to travel in the direction of its larger end, ortoward the base of the cone; so that the rollers of the respective series press against the guide. rings E E which receive their larger 'ends. These rings are formed with sockets d cl to receive journals 6 6 formed on-the smaller ends of their respective rollers, in order to maintain By reason of the opposite conlng of the rollers any end thrust, in the case of such a bearing as is shown in Figs. 1 to 10, is taken up through the engagement of the tapering rollers with the coned surfaces of the traction rings by making provision to receive the end-thrust of the rollers themselves. In the construction shown the end-thrust of the rollers by forcing their larger ends against one of"the guide-rings istaken up through such ring or through the cage. The engagement of the rollers with such ring is essentially a rolling engagement, since the rollers in ipro'pelling the guide-ring make contact with it on only their advancing sides, thereby reducing the surface in contact. In the case of rollers which are coned on their larger ends, the apex of the coned end is made to avoid bearing contact, either by removingthe apex, as shown at g in Fig. 4, or by forming the ring with an oil-hole of sufficient diameter, as shown at h in Fig. 7, so that the point or apex of the cone has no bearing in the ring, and hence can not hold the roller centered in the socket or hearing recess in the ring,,it being desirable that the rollers should be free to take a slightly eccentric position in these recesses. The ring B is conveniently made distinct from the shaft or axle A, but as these parts are fixed together they may be considered as essentially one part.

What I claim is 1. A roller bearing comprising oppositelytapered rollers, a traction ring having oppositely conical surfaces against which said rollers roll, and guide rings connected together and engaging the rollers at their opposite ends, said rollers having at their larger ends a thrust engagement with such rings.

2, A roller bearing comprising oppositely tapered rollers arranged upon parallel axes, traction rings having oppositely coned surfaces against which said rollers roll, the rollers of opposite taper being independent of each other, and guide rings connected together and engaging the ends of the rollers and receiving the longitudinal thrust thereof.

3. A roller bearing comprising oppositely tapered rollers arranged in pairs, the two rollers of each pair being upon a common axis, and being movable longitudinally independently of one another, traction rin s having conical surfaces against which sald rollers roll, and guide rings connected together and engaging the outer ends of the pairs of rollers.

4. A roller bearing comprising oppositely tapered rollers arranged in pairs, the two rollers of each pair being upon a common axis, and being movable longitudinally independently of one another, guiding means loosely engaging said rollers to keep them in axial alinement, traction said rollers roll, and guide rings connected together and engaging the outer ends of the pairs of rollers;

5. A roller bearing comprising oppositely tapered rollers arranged pairs upon a common axis with their smaller ends approaching and their larger ends remote from one another, and independently movable longitudinall traction rings having oppositely eoned surfaces against which said rollers roll, and guide rings connected to getlier and engaging the outer ends of the pairs of rollers an receiving the out-ward thrust thereof.

rings having conlcal surfaces against which cal surfaces agalnst 6. A roller bearing comprising oppositely tapered rollers, traction rings havmg comwhich said rollers r 11, guide rings connected together and engaging the rollers at their opposite ends, and means for adjusting the distance apart of the respective guide rings whereby to adjust the rollers and take 11 wear.

In witness whereof, have hereunto signed my name in the presence of two subscribing witnesses.

-WM. J. CARTWRIGHT.

-Witnesses:

(3. Emma, Fem) WHITE; 

